People of the Plum Bayou culture built these enormous mounds over 1,000 years ago.

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

This lava formation earned its whimsical name from the log-like formation of it stones.

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

This massive metal sculpture in the shape of a folded paper airplane overlooks a Utah mountain.

The unusual patterns in this rock formation result from two distinct modes of weathering.

The notorious Wild West outlaw was raised in this unassuming abode.

Oddly shaped rock formation, misassociated with a nearby utopian community.

A tunnel with windows, so you don't miss out on the impressive views.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Drift through underground caves on a tube.

A colossal statue with a controversial past, forgotten for more than 30 years.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

A small flooded ghost town with a few scattered structures remaining.

This spectacular track has run continuously since 1882.

A popular rock that acted as a waymarker for American pioneers.

Creek water that starts here has a 50/50 chance of ending up in the Atlantic or the Pacific.

The first declared National Monument in the United States.